[HIGH-QUALITY MATERIALS]The sanding sponge are made of industrial-grade brown corundum with special electrostatic sand planting process. which is strong and , not easy to tear, making it versatile for a range of hand sanding needs [ASSORTED GRIT SANDING BLOCKS]Includes 8 sanding blocks in 4 grits, from coarse to superfine specifications in 60/80/120/220 grit, 2 blocks for each grit. You can cut it into appropriate sizes [EASY TO IDENTIFY]Grit numbers are printed directly on the sanding sponge for quick selection, there are four different colors, including gray (corresponding to grit size - 220), blue (120), green (80) and orange (60), with different numbers of grains for different colors [WASHABLE AND REUSABLE]The drywall sanding blocks are designed for wet and dry dual-use, also can be used straight away or applied wet to the of an object for polishing, it can reduce flushing and improve work efficiency [MULTI-PURPOSE]The sanding sponge are Ideal for polishing flat and irregular surfaces, suitable for any home renovation project - drywall, woodworking, putty sanding, furniture finishing, metal polishing and other polishing,etc, Weight: 0.38029740195 Pounds, Manufacturer: Pomoflexi